Physical properties in homogeneous uniaxial high pressure

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We have developed an experimental technique which enable us to generate "homogeneous uniaxial high pressre" by using cubic anvil type high pressure apparatus. We have succeeded in generating 'effective' uniaxial high pressure by contriving the shape of specimen, which is set in the sample space in cubic anvils. We have confirmed uniaxiality by observing pressure induced superconductivity in BaFe2As2. Because of difficulties in synthesis for single crystals of mercury based high-Tc cuprate, we can not perform same uniaxial pressure study in cuprates. However, we observed superconductivity in Hg-1223 polycrystal at isotropical high presssure as a comparison experiment for uniaxial high pressure measument, then we succeeded in observation for the highest bulk superconducting transition temperature with zero resistivity ever reported(Tc=153K at P=15GPa).